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Crude skidded to its worst loss in a month as disappointing corporate profit forecasts stoked concern about the economy, bruising a market already anxious about booming American oil supplies.

SAN FRANCISCO — Paccar Inc. CEO Ron Armstrong said the trucking industry is moving toward ever-cleaner and more energy-efficient vehicles and will adopt increasingly advanced automated driving technology to assist drivers.

SAN FRANCISCO — American Truck Dealers announced a new industry coalition to push for the repeal of the 12% federal excise tax on heavy-duty trucks.

As fleets know, many variables can affect test results for truck fuel-saving technologies and practices.

A year ago, the U.S. government envisioned American crude production averaging 11.95 million barrels a day in 2042. Shale drillers are set to exceed that this year.

An appeals court has rejected a challenge by a group of trade and energy organizations to block California’s low-carbon fuel standard aimed at reducing the rate of greenhouse gas emissions in the state’s transportation sector.

Heavy Canadian crude isn’t getting cheaper, but that hasn’t stopped companies from splurging on costly rail shipments.

California environmental regulators are aggressively moving forward with plans to require significant reductions in nitrogen oxides and particulate matter emissions for heavy trucks, improvements in “real time” on-board diagnostics, and lengthening the “useful life,” durability and warranty periods for heavy trucks.

Sunoco has acquired the wholesale fuel-distribution business from Schmitt Sales as well as certain convenience store locations from Speedway to turn into wholesale distribution sites.

If the United States decides to deploy a slate of sanctions that it is said to have drafted against the Latin American nation, American refiners would be forced to cease purchases. That may mean more supply becomes available for the OPEC producer’s other big customers: China and India.